Idle speed drops

Farmall Cub Forum -- Questions and answers to all of your Cub related issues.

Moderator: Team Cub

Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.

Idle speed drops

Postby pharmerphil3 » Wed Jul 31, 2013 6:43 pm

Using Bill & Rick’s advice, I corrected the timing issue and the Cub idles fine now. However, I have a new problem. When I depress the clutch the idle speed noticeably drops. :? Any suggestions as to what can be causing this? Any help will, once again, be appreciated! :D

Thank you,
Phil
User avatar
pharmerphil3
5+ Years
5+ Years
 
Posts: 913
Joined: Sat Apr 22, 2006 11:10 am
Location: CT, Monroe
Zip Code: 06468
Tractors Owned: 1948 Cub
1955 Cub
1961 Cub
1963 Cub
1964 Cub Cadet 70
1969 Cub Cadet 125
100 Spreader
144 Cultivator
3 Field Cultivator
22 Sickle Mower
193 Plow
54-Plow
59 Wood's Mower
2030 John Deere
Circle of Safety Award
Circle of Safety: Y

Re: Idle speed drops

Postby Boss Hog » Wed Jul 31, 2013 6:52 pm

That is normal for the older cubs. You are putting pressure on the crankshaft it is most likely moving to the front some and the friction on the bearing all combine to slow down the engine
IN GOD WE TRUST
All others pay cash
Boss Hog
Power corrupts; absolute power corrupts absolutely byJohn Emerich Edward Dalberg
User avatar
Boss Hog
Cub Pro
Cub Pro
 
Posts: 9805
Joined: Mon Oct 24, 2005 8:35 pm
Location: VA. Randolph
Zip Code: 23962
eBay ID: dmb2613
Circle of Safety Award
Circle of Safety: Y

Re: Idle speed drops

Postby Eugene » Wed Jul 31, 2013 6:56 pm

And to add what Boss Hog said. Suppose to do that, short answer. So everything is fine.

Cause, the throwout bearing is a solid carbon type puck. When clutch engaged, pressure plate fingers rub the puck, slowing down engine rpms.
I have an excuse. CRS.
Eugene
Team Cub Mentor
Team Cub Mentor
 
Posts: 12528
Joined: Fri Jul 02, 2004 9:52 pm
Location: Mo. Linn
Zip Code: 65051
Circle of Safety Award
Circle of Safety: Y

Re: Idle speed drops

Postby pickerandsinger » Thu Aug 01, 2013 6:00 am

Always wondered why it was easier to start in neutral, and why the engine bogged down with the clutch in.....Thanks Boss and Eugene....and :thanx: farmerphil for posting the question....
In Memory of 58,286
pickerandsinger
501 Club
501 Club
 
Posts: 887
Joined: Thu Oct 18, 2012 3:23 pm
Zip Code: 13143
Tractors Owned: 1957 Cub Low Boy w/ Danco c3 (Cubby)
1953 Cub w/ IH C-2 MOWER (Chompers)
1954 Cub w/IH C-3 MOWER ("ED")
1950 Ferguson TO20 w/ loader
1951 Ferguson TEA 20 (parts)
F/H Disc Harrow for cub L-38
C-22 Sickle Bar Mower
IH Cub Snow Blade 54A
York Rake for Cub home made
Single bottom Plow for Cub F194
Gravely 5660 12 hp/ w snoblower.rototiller,bush hog
Circle of Safety Award
Circle of Safety: Y

Re: Idle speed drops

Postby Rick Spivey » Thu Aug 01, 2013 6:29 am

Although normal, it does remind me that the throwout bearing should be greased annually, using the cheap grease that will separate. Proper greasing could reduce the effect, or at least limit it to only what is normal.
Rick Spivey
'52 Cub ("Great Personality") 148xxx
'48 Cub with FH ("Gunny Cub") 38xxx
'57 Lambretta (a slow work in progress)
'74 Triumph TR6 (Mama's toy)
User avatar
Rick Spivey
Cub Pro
Cub Pro
 
Posts: 1741
Joined: Sun Jul 01, 2007 10:07 pm
Location: SC, Simpsonville 29681
Zip Code: 29681
Circle of Safety Award
Circle of Safety: Y

Re: Idle speed drops

Postby pharmerphil3 » Thu Aug 01, 2013 11:18 am

Thank you guys; this is truly the greatest site for help and information! I really appreciate all of you! :{_}:

Thanks again,
Phil
User avatar
pharmerphil3
5+ Years
5+ Years
 
Posts: 913
Joined: Sat Apr 22, 2006 11:10 am
Location: CT, Monroe
Zip Code: 06468
Tractors Owned: 1948 Cub
1955 Cub
1961 Cub
1963 Cub
1964 Cub Cadet 70
1969 Cub Cadet 125
100 Spreader
144 Cultivator
3 Field Cultivator
22 Sickle Mower
193 Plow
54-Plow
59 Wood's Mower
2030 John Deere
Circle of Safety Award
Circle of Safety: Y

Re: Idle speed drops

Postby Smokeycub » Fri Aug 02, 2013 7:57 am

pickerandsinger wrote:Always wondered why it was easier to start in neutral, and why the engine bogged down with the clutch in

It is recommended to start these Cubs in neutral for exactly that reason, and less wear and tear on the driveline and starter.
Ray
Smokeycub
Attachments - 193 plow - 144 cultivator - 22 mower - 28A disc harrow - 54 leveling blade - Woods 59C2 - drag harrows - Mott D9 flail
Smokeycub
501 Club
501 Club
 
Posts: 611
Joined: Tue Apr 26, 2011 10:47 am
Location: Ravenna, Ohio
Zip Code: 44266
Tractors Owned: 48 F Cub #11676
65 Cub Cadet 104
70 450C JD
67 Cub Cadet 107
90 B7100HST-D Kubota
72 Cub Cadet 149
54 Super C
Circle of Safety Award
Circle of Safety: Y

Re: Idle speed drops

Postby Boss Hog » Fri Aug 02, 2013 8:53 pm

Smokeycub wrote:
pickerandsinger wrote:Always wondered why it was easier to start in neutral, and why the engine bogged down with the clutch in

It is recommended to start these Cubs in neutral for exactly that reason, and less wear and tear on the driveline and starter.

On the late models you cranked them with the clutch pedal in, as they had a safety switch. The older cubs were cranked in neutral for safety reasons
Boss
IN GOD WE TRUST
All others pay cash
Boss Hog
Power corrupts; absolute power corrupts absolutely byJohn Emerich Edward Dalberg
User avatar
Boss Hog
Cub Pro
Cub Pro
 
Posts: 9805
Joined: Mon Oct 24, 2005 8:35 pm
Location: VA. Randolph
Zip Code: 23962
eBay ID: dmb2613
Circle of Safety Award
Circle of Safety: Y


Return to Farmall Cub

Who is online

Users browsing this forum: Eugene and 3 guests